Drupal 7.x

I don't know what happened. I lost admin rights. I don't know what I did wrong. I was uninstalling the facebook module and when I went back to my home page it was a different color and I lost all admin rights. I can't make any changes to the site now. Can someone please help.

Hello,

First time i'm using Drupal and everything works fine except one thing.

I can't see thumbnails of the images i've used in articles. When i make a new article, I can add an image if I want. But when i try i can't see the image for some reason.

If i go to configuration > Media > images style > (thumbnail for example) i'll see this:
http://www.hedva.nl/images/imagenotworking.png

Hi, I noticed that the webform panel is still visible to logged users even if I set the right permissions in the admin menu; in this way they may change fields etc.
Is there a way to disable the visibility of the webform to logged users?

I am using Druapl 7, Bartik theme.
Thank you.

Edit--
found a solution here: http://drupal.org/node/775072, post#5

hi people
i am using a windows vista.
i have installed d7 on my server (i use webfusion as my host) for the first time using a old domain name to get it up and running this all went well but now i wanted to create a real site so i uploaded it to my server using the new domain name
i then go to the new web address and start the install process it passes all the installation correctly the installation bar goes to the end correctly but when it comes to the configure site part it stops and gives the http 500 error.

Hi,

I know I am missing something here but cannot see what and cannot find out from the existing posts. I am updating some of my themes to Drupal 7. No problem with the bulk of it. I notice though on most D7 themes the tpl files have been placed in a sub-directory called "templates."

I assume this is now standard for D7? I did not see it documented on the 6 to 7 conversion page ( http://drupal.org/node/254940 ).

Even it degrades security I need to keep session when switched between http/https.
[Details described in http://drupal.org/node/1050102 ]
Even I use $conf['https'] = TRUE; in my settings.php there are no differences in behavior.
My sessions are still not kept.

Any suggestions?